It's not just AMD. I have a 3090 FTW3 and my frame rate is absolute garbage. On average I'd say I'm around 50-60 FPS when engaging in fights. Even dropping the video settings way down I don't see much improvement. I get black screen flashes, stuttering, flickering, and huge FPS drops. There is something seriously flawed with the latest update/expansion. I recently started playing again after a long break and this was not an issue when I was playing last year on my 1080 TI/2080 TI.